Light

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Light
Physics Girl Colour: https://www.youtube.com/watch?v=Um0ZXhrQUJ4
Physics Girl Colour mixing: https://www.youtube.com/watch?v=uNOKWoDtbSk
Minute Physics Rainbows: https://www.youtube.com/watch?v=9udYi7exojk
Physics Girl Mirror Flipping: https://www.youtube.com/watch?v=vBpxhfBlVLU#t=56.667188

Laser sim: https://phet.colorado.edu/en/simulation/lasers
Engineer Guy Lasers: https://www.youtube.com/watch?v=oUEbMjtWc-A
Laser Love: https://www.youtube.com/watch?v=y3SBSbsdiYg (a bit simplistic but fun)
Inside a laser: https://www.youtube.com/watch?v=lW4Uq_2VPhE